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  1. Arouse1973

    design of double tail comparator using cmos of 90nm technology

    Show us your current design. The circuit you have so far.
  2. Arouse1973

    PIC12f1501 used to turn a servo

    Glad you got it working. Adam
  3. Arouse1973

    TV interference from LED lamps

    How are they powered? Do you have a picture of one? Adam
  4. Arouse1973

    PIC12f1501 used to turn a servo

    Looking again at your code you are switching on for 18 ms and off for 2 ms, this is wrong. You only need one loop. If you want to make it go back and forth you need to try this. Set out for 1 ms on delay 18 ms .....do 50 times, set out for 1.5 ms on delay 18 ms....do 50 times, set out for 2 ms...
  5. Arouse1973

    TV interference from LED lamps

    You could also try shielded power cables for the Leds power or a small rap around ferite bead for the current power cable. Adam
  6. Arouse1973

    PIC12f1501 used to turn a servo

    Also what pin do you have it connected to RA?
  7. Arouse1973

    PIC12f1501 used to turn a servo

    Do you have a circuit diagram we can see please. Adam
  8. Arouse1973

    Thermocouple RF Ammeter

    I think they work by passing the rf current through a wire and basically measure the temp rise of the wire. If you know the resistance of the wire and its temp you could work out the current. The thermocouple just measures temperature with a voltage output related to temperature. Not sure what...
  9. Arouse1973

    Hello from L.J

    Hello LJ and welcome. Adam
  10. Arouse1973

    Issues with RF transmitter/receiver pair in DIY remote control car

    Hello Robert. Before you try the common mode choke you could try and connect another two capacitor. Leave the one you have and connect another two capacitors. One from the positive (+) terminal to the case of the motor and another one from the common terminal (-) to the case and try that. Adam
  11. Arouse1973

    design of double tail comparator using cmos of 90nm technology

    Let me see......... Nope it's not working today sorry..... Care to explain in more detail what you want?
  12. Arouse1973

    Substitute for ELNA capacitors

    Have a look at the data sheets for the old capacitors and see if the specifications match then you can choose one. Adam
  13. Arouse1973

    Picaxe/mcp23027 i/o exp interface circuit diagram

    No probs, you know where we are, hope to see more of you on here. Adam
  14. Arouse1973

    Picaxe/mcp23027 i/o exp interface circuit diagram

    Yeah I am sure I can help you get it wrong :)
  15. Arouse1973

    Picaxe/mcp23027 i/o exp interface circuit diagram

    Ok that's fair enough. I can't help with the picaxe I am afraid. PIC assembler and C, then I maybe able to help. I have however had good success running I2C from a chipkit development PCB. I had is communication to an I2C bus in a few hours once I found the right code. Adam
  16. Arouse1973

    New but asking for help with MC / PWM ?

    Hi Steve. This little PCB will do the motor control but will not charge the battery. The USB connector is for programming only. Although you maybe able to get a +5 Volt output from it which you could possibly connect to a battery charger IC (special one needed for Lithium batteries). I haven't...
  17. Arouse1973

    Picaxe/mcp23027 i/o exp interface circuit diagram

    Hi there. I dont know picaxe I am sorry. Looking at the code from the link I cant make out anything. Why do you choose picaxe out of interest. Thanks Adam
  18. Arouse1973

    Picaxe/mcp23027 i/o exp interface circuit diagram

    The mcp requires I2C Comms. I cant see the 14m2 supports I2C. This means writing your own code, I dont think this is possible for you sorry. Choose an mc that supports I2C is the best bet. Thanks Adam
  19. Arouse1973

    Issues with RF transmitter/receiver pair in DIY remote control car

    Sounds like you have some interference from the motors. Do you have any EMI supression capacitors across the motor? Adam
  20. Arouse1973

    Calculating Magnitude of two identical charges (Coulomb's Law)

    Your welcome! However if the two charges are different and of different sign, then that's a whole different thing. Adam
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